Mouthpiece



FIG. 1 is a front, left side perspective view of a mouthpiece showing mynew design;

FIG. 2 is a rear elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a top elevational view; and

FIG. 5 is a left side, cross-sectional view.

The ornamental design for a mouthpiece, as shown.